Deep-well pump



1929- o. w. JOHNSON 1,723,041

DEEP WELL PUMP Filed Sept. 22. 1928 Patented Aug. 6,1929.

UNITED STATES PATENT OFFICE.

OSCAR W. JOHNSON, 0F ROCKFORD, ILLINOIS, ASSIGNOR TO WARD-LOVE PUMP GOR- "PORATION, OF ROCKFORD, ILLINOIS, A CORPORATION OF ILLINOIS.

DEEP-WELL PUMP.

Application filed September 22, 1928. Serial No. 307,651.

My invention relates to improvements in power heads for the more eiiicient and convenient operation of lift pumps.

The invention has for its general object the provision of a generally improved power head which is efficient in operatlon, may be conveniently and easily repaired, has a comparatively long life, and lacks many of the f disadvantages to which prior pumps of this type have been subject.

More specifically I have aimed to provide a power head of novel design in which the walking beam is actuated by a SllCllIlg movement of a wrist pin bearing.

Another object has been to provide a fully enclosed operating mechanism which may be assembled and dismounted without unnecessary interference from the casing.

Still another object of my invention is to provide a power head which will be quiet in operation and will not produce the characteristic water pound of other power head operated pumps.

Referring to the drawings:

Figure 1 is a side elevation of a power head embodying my invention;

Fig. 2 is a cross-section on the line 22 of Fig. l; and

Fig. 3 is a diagram illustrative of one of the features of my invention.

Broadly speaking the invention consists in a train of gearing which serves to actuate a walking beam connected to a crosshead in such wise that the rotary motion of the gears is translated into vertical reciprocal motion at the crosshead. The invention relates to the particular manner of accomplishing this d translation and to certain refinements of operation which will become evident as the disclosure proceeds.

Operating mechanism is mounted in a ca."- ing generally designated by 5. Gears 6 are driven in a counter-clockwise direction by pinions 7 mounted on a drive shaft 8. A wrist-pin 9 connects the gears and supports a walking beam sleeve 10 through which a walking beam bar 11 slides as the gears rotate.

The walking beam comprises three parts, although three parts are'by no means essen tial to the invention: A member 16 pivotally connected to the crosshead, a fulcrum member 14 mounted on the casing through the bracket 12 which passes through the frame and is fastened at 13, and an intermediate bar 11 fixedly attached at one end 18 to the member 16, the other end being slidably mounted in the fulcrum member at 14. The walking beam bar may be made to pass through an extension of the member 16 as shown at 17 to add greater strength to the assembly. The member 16 is forked at its ront end and the forks passed on opposite sides of a crosshead 19, to be attached to the latter by means of a pin 20 which extends from fork to fork of the walking beam bracket, passing through a pivotal bearing in the crosshead. Through this pin the crosshead is given a reciprocal motion along a stationary guide bar 21. The pump rods are attached to the crosshead at 22 and move with the reciprocal motion of the latter. A casing top 27 is provided with flanges 28 which fit inside the walls of the casing and are connected firmly to them by means of bolts 29 in order to strengthen and stabilize the side walls of the casing.

Two types of lubrication are provided. The bottom of the casing is used as a container for oil in which the gears 6 dip as they revolve. This movement tends to splash the oil about the inside of the casing and so lubricate the parts, but, in order to insure thorough oiling of the bearings a pan 23 is provided and supported upon the drive shaft by hooks 24. Oil is carried up by the large gears and deposited into this pan from which it flows by gravity, through the pipes 25 and 26 to the bearing surfaces.

Attention is directed to the mounting and relation of the walking beam structure to its rlving gears. The sleeve 10 on the wrist pin while it actuates the walking beam moves to and fro upon the walking beam bar, thus taking up most of the horizontal component of the circular motion. The crosshead end of the walking beam would, however, be caused to move on the are of a circle were means not provided to permit it to move vertically. In the embodiment of my invention shown I have placed a pivotal connection between the crosshead and the walking beam and at the other end of the walking beam have placed both a pivotal and a slidable connection. It will be seen that this slidable connection for absorbing the horizontal component of the beam movement may be placed at either end or some intermediate point on the beam.

t will be observed that my machine has a somewhat higher degree of efliciency than other machines of a similar nature and that the so-called water hammer is eliminated. A study of Fig. 3 will serve to indicate the reason as well as illustrate one of the features of my invention. Comparing Fig. 3 and Fig. 1 let 39 in Fig. 3 represent the pivotal connection of the walking beam at'the fulcrum member. The circle 44 will be the path inscribed by the gear wheels and the circle 45 will be the path inscribed by the wrist pin connecting said wheels. The point 42 will then be the uppermost possible position of the crosshead and 43 its lowest possible position. The lines 39-42 and 3943 drawn tangent to the circle 45 will be the positions of the walking beam when the crosshead is changing from its upstroke to its .downstroke and from its down to its upstroke respectively. It will, therefore, be evident that the number of degrees of circular motion translated into the upstroke is considerably greater than the number in the downstroke. .This difference permits a more gradual starting and stopping of the upstroke and consequently, a more gradual placing and releasing of pressure on the water being pumped with a resulting reduction in the water hammer. The arrangement also tends to greater power efficiency in operation.

Another feature of my invention is the manner in which the bearings for the gears are made and mounted. In Fig. 2, 30 is the bearing surface having a conical end 31, from which a threaded portion 32 extends beyond the bearing shoulder 33 of the casing. The conical end has a projecting flange or key 34 which is designed to fit in a slot of a split collar 35. The split collar slips into a shoulder 33 and is forced down against the conical portion by a screw 36 when the nut 37 is drawn up tight forcing the cone into the collar forming a fast but easily removable bearing.

It will be understood that, while I have described a preferred embodiment of my invention, I am aware that numerous modifications may be made in the form as set out without departing from the spirit and scope of the claims.

I claim:

1. In a power head, the combination of a casing, a rotary driven member, a wrist pin connected to said driven member, a reciprocable crosshead, a vertical guide for said crosshead, a pump rod attached to and actuated by said crosshead, a' walking beam structure pivotally attached at one end to the casin and at its opposite end pivotally connecte to the crosshead, a sleeve on the wrist pin having a sliding connection with the walking beam, and means between the crosshead and the opposite pivotal mounting of the walling beam structure for absorbing the horizontal component of the walking beam motion while the vertical component is being transmitted to the crosshead.

2. In a power head, the combination of a casing, a driving shaft, pinions upon said driving shaft, driven gears cooperatingwith said pinions, a wrist pin connecting said driven gears, a reciprocable crosshead, a vertical guide for said crosshead, a pump rod attached to and actuated by said crosshead, a Walking beam structure pivotally attached at one end to the casing and at its opposite end pivotally connected to the crosshead, a sleeve on the wrist pin having a sliding connection with the walking beam, and means between the crosshead and the opposite pivotal mounting of the walking beam structure for absorbing the horizontal component of the walking beam motion while the vertical ploinponent is being transmitted to the cross- 3. In a power head, the combination of a casing, a rotary driven member, a reciprocable crosshead, a guide for the crosshead, a pump rod attached to and actuated by the crosshead, a walking beam structure comprising a member pivotally connected to the crosshead, a fulcrum member pivotally mounted on the casing, and an intermediate bar fixedly attached at one end to the first mentioned member and slidably mounted at I its opposite end in said fulcrum member, a wrist pin eccentrically attached to said ro tary driven member, and a sleeve on the wrist pin having a sliding connection with the walking beam bar.

4:. In a power head, the combination of a casing, a rotary driven member, a wrist pin connected to said driven member, a reciprocable crosshead, a guide for said crosshead, a pump rod attached to and actuated by the crosshead, a walking beam structure pivotally attached at one end to the casing and at its opposite end pivotally connected to the crosshead placed in a relative position whereby a greater number of degrees of circular motion are translated into the upstroke than into the down stroke, a sleeve on the wrist pin having a sliding connection with the walking beam, and means between the crosshead and the opposite pivotal mounting of the walking beam structure for absorbing the horizontal component of the walking beam motion while the vertical plomoonent is being transmitted to the cross- 5 In a power head, the combination ofa casing, a driving shaft, pinions upon said driving shaft, driven gears cooperating with sa d pinions, a wrist pin connecting said driven gears, a reciprocable crosshead, a vertlcal guide for said crosshead, a pump rod attached to and actuated by the crosshead, a walking beam structure comprising a member pivotally connected to the crosshead, a fulcrum member pivotally mounted on the casing, and an intermediate bar fixedly attached at one end to the first mentioned member, and slidably mounted at its opposite end in said fulcrum member,'a sleeve on the wrist pin having a sliding connection with the walking beam bar, and an oiling assembly supported between said driving shaft and said crosshead comprising a receiving pan and oiling tubes extending to the bearing surfaces.

6. In a power head, the combination of a casing, a driving shaft, pinions upon said driving shaft, driven gears cooperating with said pinions, a wrist pin connecting said driven gears, a reciprocable crosshead, a ver tical guide for said crosshead, a pump rod attached to and actuated by the crosshead, a walking beam structure comprising a member pivotally connected to the crosshead having an extended arm, a fulcrum member pivotally mounted on the casing, and an intermediate bar fixedl attached at one end to the first mentioned member, at an intermediate point engaging the arm of said first mentioned member, and slidably mounted at its opposite end in said fulcrum member, a sleeve on the wrist pin having a slidable connection with the walking beam bar, and an oiling assembly supported between said driving shaft and said crosshead.

7. In a power head, the combination of a casing, a driving driving shaft, driven gears cooperating with said pinions, a wrist pin connecting said driven gears, a reciprocable crosshead, a vertical guide for said crosshead, a pump rod attached to and actuated by the crosshead, a walking beam structure comprising a member pivotally connected to the crosshead, a fulcrum member pivotally mounted on the casing, and an intermediate bar fixedly attached at one end to the first mentioned member and slidably mounted at its opposite end in said fulcrum member, a sleeve shaft, pinions upon saidon the wrist pin having a sliding connection With-the walking beam bar, an oiling assembly supported between said driving shaft and said crosshead comprising a receiving pan and oiling tubes extending to the bearing surfaces, a cover for the casing, flanges on said cover extending along the walls of said casing, and means for fastening said flanges and said casing together for the purpose of strengthening and stabilizing the latter.

' 8. In a power head, the combination of a casing, a driving shaft, pinions upon said driving shaft, driven gears cooperating with said pinions, bearings for said driven gears each comprising a cylindrical axle portion, a tapered bearing portion, a key integral with the tapered portion, a bearing hub cast integral with the aforementioned casing, a tapered split collar resting between the tapered bearing portion and the hub, a set screw passing through the hub and pressing against the tapered collar, a threaded portion integral with the tapered bearing portion, and a retaining nut passing over the threaded portion and pressing against the hub, a wrist pin connecting said driven gears, a reciprocable crosshead, a vertical guide for said crosshead, a pump rod attached to and actuated by the crosshead, a Walking beam structure'pivotally attached at one end to the casing and at its opposite end pivotally connected to the crosshead, a sleeve on the wrist pin having a sliding connection with the walking beam, and means between the crosshead and the opposite pivotal mounting of the walking beam structure for absorbing the horizontal component of the walking beam motion while the vertical component is being transmitted to the crosshea In witness of the foregoing I aflix my signature.

OSCAR W. JOHNSON. 

